What is the difference between mid-ocean ridges and trenches?
What is the difference between mid-ocean ridges and trenches? Mid-ocean ridges occur at divergent plate boundaries. Trenches occur at convergent plate boundaries. The deep trenches occur where one plate is being subducted under another.
Which feature of Earth is created at mid-ocean ridges?
Explanation: Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
What 2 features occur at mid-ocean ridges?
There are two processes, ridge-push and slab-pull, thought to be responsible for the spreading seen at mid-ocean ridges, and there is some uncertainty as to which is dominant. Ridge-push occurs when the weight of the ridge pushes the rest of the tectonic plate away from the ridge, often towards a subduction zone.
Which feature of Earth is created at mid-ocean ridges quizlet?
Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics.
What is the role of Mid-Ocean Ridge?
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
Which discovery did scientists make at mid ocean ridges that caused them?
Answer. Explanation: On the basis of Tharp’s efforts and other new discoveries about the deep-ocean floor, Hess postulated that molten material from Earth’s mantle continuously wells up along the crests of the mid-ocean ridges that wind for nearly 80,000 km (50,000 miles) through all the world’s oceans.
What happens to the thickness of sediments further away from the ridge what could be the cause of this?
Sediment on ridge flanks commonly thicken with distance from the spreading axes, reflecting the increasing age of the volcanic seafloor. Complications to this simple picture occur where there is substantial sediment transport or varied dissolution of carbonate.
What molten material will come out from the ridge?
Answer: At a mid-ocean ridge, molten material rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. As the molten material cools, it forms a strip of solid rock in the center of the ridge.
Where does the most sediment accumulate?
Deltas and river banks, where much sediment is deposited, are often the most fertile agricultural areas in a region.
What happens to the size of sediment as you get farther away from the shoreline?
As the water from the stream combines with the water in the lake, its speed slows down sharply. Once this occurs, the larger grains of sediment become too heavy for the current to move. As a result, finer grains of sediment are usually found farther from shorelines.